INCA funded by the European Community 
through the Fifth Framework Programme

Interhemispheric differences in cirrus properties from anthropogenic emissions (INCA)

INCA payload onboard the Falcon aircraft:

  1. Cloud microphysical properties
  2. Interstitial/out-of-cloud aerosol properties
  3. Crystal redisual properties
  4. Trace gas concentration

MARL: Ground based mobile Aerosol-Raman-Lidar of AWI, Alfred-Wegener Institute, Bremerhaven, O. Schrems

Observations of Cirrus Clouds Backscatter Properties with MARL:
 
Nd: YAG-laser, pulse energy  about 300 mJ at 355 and 532 nm 
Pulse repetition frequency 30 Hz 
Telescope 1.1 m diam. primary mirror, 3.5 m focal length 
Signal detection 10 channel polychromator 
photon counting / analog mode detection 
Installation 20-feet-container, air conditioned
Power consumption 380 V, 3 phase, 15 kW
Total weight about 10 metric tons.

 

INCA aircraft payload: Cloud microphysical properties

Instrument Measurement Range Inlet
PMS-PCASP Aerosol size distribution 0.12-3.5 mm Wing mount
PMS-FSSP-300 Aerosol/Crytal size distribution 0.3-30 mm Wing mount
PMS-2DC Crystal size distribution 50-800 mm Wing mount
Polar nephelometer Scattering phase function 1-500 mm Wing mount
Hygrometer Cloud water content 0.002-1 g/kg CVI probe

 

INCA aircraft payload: Interstitial/out-of-cloud aerosol properties

 
Instrument Measurement Range Inlet
CPC 1 Aerosol number density D>10 nm Aerosol probe
CPC 2 Aerosol number density D>15 nm Aerosol probe
DMPS Aerosol size distribution 0.02-0.15 mm Aerosol probe
PMS-PCASP Aerosol size distribution 0.12-3.5 mm Aerosol probe
Filter samples Particle composition D>0.2 mm Aerosol probe
Volatility Thermal properties of particles 0.02-2 mm Aerosol probe
Black carbon Differential absorption >0.1 g m-3 Aerosol probe

 

INCA aircraft payload: Crystal residual properties

 
Instrument Measurement Range Inlet
CPC 1 Residual number density D>10 nm CVI probe
CPC 2 Residual number density D>15 nm CVI probe
DMPS Residual number density 0.02-0.15 mm CVI probe
PMS-PCASP Residual number density 0.12-3.5 mm CVI probe
Filter samples Residual particle composition D>0.2 mm CVI probe
Volatility Thermal properties of residual particles 0.02-2 mm CVI probe
Black carbon Differential absorption >0.1 g m-3 CVI probe

INCA aircraft payload: Trace gas concentrations

Instrument Measurement Range Inlet
Hygrometer Water vapour mixing ratios 3-5000 ppm Gas inlet
NO Nitrogen oxide mixing ratio 0.005-25 ppb Gas inlet
NOy Total reactive nitrogen gases 0.05-25 ppb Gas inlet
Ozone monitor Stratospheric tracer 10-1500 ppb Gas inlet
Carbon monoxide Tropospheric tracer 5-500 ppb Gas inlet